Home / 19,845.37-27,387.86-13,119.19

Finding the Fourth Proportional to 19,845.37, 27,387.86 and 13,119.19

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Solution

The fourth proportional to 19,845.37, 27,387.86 and 13,119.19 is: 18,105.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,845.37 : 27,387.86 = 13,119.19 : x
  2. Step 2: Convert to fraction form
    19,845.37/27,387.86 = 13,119.19/x
  3. Step 3: Cross multiply
    19,845.37x = 27,387.86 × 13,119.19
  4. Step 4: Simplify right side
    19,845.37x = 359,306,539.03
  5. Step 5: Solve for x
    x = 359,306,539.03/19,845.37
  6. Step 6: Final answer
    x = 18,105.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.